Girik, E. A., Гирик, Е. А., & Гирик, Е. А. (1993). On the existence of vector fields with a given set of singular points on a two-dimensional closed oriented manifold. Institute of Mathematics, NAS of Ukraine.
Чикаго стиль цитування (17-те видання)Girik, E. A., Е. А Гирик, та Е. А Гирик. On the Existence of Vector Fields with a Given Set of Singular Points on a Two-dimensional Closed Oriented Manifold. Institute of Mathematics, NAS of Ukraine, 1993.
Стиль цитування MLA (8-ме видання)Girik, E. A., et al. On the Existence of Vector Fields with a Given Set of Singular Points on a Two-dimensional Closed Oriented Manifold. Institute of Mathematics, NAS of Ukraine, 1993.
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